This leaves me with the mini-calendar working, but in need of a little style:

Before defining the style, I provide a scope for the CSS style changes by adding an id attribute to the <body> tag in the mini-calendar Haml:

...%body{:id => 'mini-calendar'}...

To actually style that, I am using less CSS. In the mini-calendar context, the <h1> content should be white, with a green background, and any links should also be white. The less CSS corresponding to that description: